acutr and chronic phases的用法和样例：
- GFAP was observed only in PAG at subacute and chronic phases of inflammation.
- In group STE,SD/chord was not significantly improved both in acute and chronic phase.
- The results, in the initial period of SIV infection and chronic phase, the dendritic cell has not been activated, and Uzbekistan Hoolock monkey SIV virus unable to make significant response.
- Abortion, mastitis, and chronic deformities of the feet are common.